Trapping Red Flour Beetle Adults in Neighborhoods Surrounding A Grain Cleaning Facility Annoyed by...
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Trapping Red Flour Beetle Adults in Neighborhoods Surrounding A Grain Cleaning Facility Annoyed by the infestation of red flour beetles, Tribolium castaneum (Herbst), inside homes, the residents living nearby a grain cleaning facility requested us to investigate the magnitude of the infestation. The presence of the cleaning facility prevented us from conducting a mark-release- recapture study. To study the beetle presence and distribution, only traps were used at the facility in the railroad yard to the south of the facility, and homes to the north and south of the facility during July to October in 1998. Materials and Methods Acknowledgement: This project was supported by the Minnesota Department of Agriculture. Results Bhadriraju Subramanyam and Xingwei Hou Department of Grain Science and Industry Kansas State University, Manhattan, KS 66506, USA The number of traps and sampling schedules are shown in the table below. Pheromone-baited sticky traps were placed on all five floors of the facility, within the railroad yard, and the four corners of 31 houses. In addition, food and pheromone-baited pitfall traps were placed in 26 houses to monitor beetles in various floors and rooms. Traps placed outdoor were distributed as shown in Fig 2. Grain Cleaning Facility Railroad yard Houses Outdoor traps 49 46 124 Indoor traps 35 N/A 260* Period (days) 76 82 36 Sampling occasions 5 5 2-3 Sampling interval (days) 15 16 15 Fig.1. Picture showing the grain cleaning facility (3.2 million bushels storage capacity) and railroad yard. The houses were located to the north and south of the facility. 0 10 20 30 40 50 60 70 80 Frequency (% ) 0 0.1-5 5.1-10 10.1-20 20.1-30 >30 M ean no.adults/trap/30 days Facility H ouses Railroad 0 20 40 60 80 100 120 140 0 0.1 -10.0 10.1 -20.0 20.1 -30.0 30.1 -40.0 40.1 -50.0 >50.1 Site No. traps Mean no. adults/trap/ 30 days + SE Houses (N) 100 3.89 + 0.44a Facility 49 3.65 + 0.85ab Houses (S) 23 2.35 + 0.57b Railroad yard 46 0.38 + 0.08c •Beetles were present inside and outside the facility and houses. •Captures were not significantly different (P > 0.05) between the facility and houses. •Very few beetles were captured in the railroad yard. •Outdoor beetle captures did not vary within a house (F = 0.50; df = 3, 89; P = 0.686), but varied among houses (F = 3.29; df = 30,89; P = 0.0001; mean density range 0.26 – 7.89 adults/trap/30 days). •Except for the attic, beetles were generally Floor No. traps Mean no. adults/trap/3 0 days Basement 8 0.25 Main 7 3.27 Bin 10 33.04 Distribut ion 5 11.60 Scale 5 5.53 Fig. 5. Beetle captures among cleaning facility floors Fig. 6. Comparison of beetle captures among four locations Scale: 1cm=67.37ft Fig.2. Sticky traps (boxed in the top picture) were placed outdoors at the cleaning facility (top), houses (middle), and railroad yard (bottom). Pitfall traps (boxed in the middle picture) were placed inside of houses. Directi on No. traps Mean no. adults/trap/ 30 days + SE NE 31 4.1 ± 0.8a SW 31 3.9 ± 0.8a NW 31 3.3 ± 0.7a SE 30 3.2 ± 0.7a 0 one data point M ean = 9.99 S E = 1.77 M ean = 21.01 S E = 9.56 M ean = 9.09 S E = 1.91 M ean = 4.92 S E = 1.57 M ean = 7.35 S E = 1.77 M ean = 14.90 S E = 3.57 0 5 10 15 20 25 Kitchen n = 68 Bath n = 25 Laundry n = 10 Living n = 68 Dining n = 10 Bedroom n = 53 Attic n = 1 Meanno. adults/trap/30days M ean = 12.15 S E = 1.67 M ean = 3.48 S E = 0.74 M ean = 16.43 SE = 4.26 0 one data point 0 2 4 6 8 10 12 14 16 18 B asem ent n = 38 G round Floor n = 175 Second Floor n = 21 A ttic n = 1 M ean n o .ad u lts/trap /30 d ay Fig. 7. Comparison of beetles captured in traps placed around houses Fig. 9. Pitfall trap captures of beetles inside houses by floor (N = 235) * pitfall traps Fig. 3. Frequency distribution of beetles captured in outdoor traps Fig. 4. Contour map of outdoor trap captures N Fig. 10. Pitfall trap captures of beet inside houses by room (N = 235) Fig. 8. Frequency distribution of captures in pitfall traps inside houses (N = 235 traps) N Background Information Conclusions Presented at the 9 th International Working Conference on Stored-Product Protection, 15-18 October 2006, Campinas, Brazil
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Transcript of Trapping Red Flour Beetle Adults in Neighborhoods Surrounding A Grain Cleaning Facility Annoyed by...
Trapping Red Flour Beetle Adults in Neighborhoods Surrounding A Grain Cleaning Facility
Annoyed by the infestation of red flour beetles, Tribolium castaneum (Herbst), inside homes, the residents living nearby a grain cleaning facility requested us to investigate the magnitude of the infestation. The presence of the cleaning facility prevented us from conducting a mark-release-recapture study. To study the beetle presence and distribution, only traps were used at the facility in the railroad yard to the south of the facility, and homes to the north and south of the facility during July to October in 1998.
Materials and Methods
Acknowledgement: This project was supported by the Minnesota Department of Agriculture.
Results
Bhadriraju Subramanyam and Xingwei HouDepartment of Grain Science and Industry
Kansas State University, Manhattan, KS 66506, USA
The number of traps and sampling schedules are shown in the table below. Pheromone-baited sticky traps were placed on all five floors of the facility, within the railroad yard, and the four corners of 31 houses. In addition, food and pheromone-baited pitfall traps were placed in 26 houses to monitor beetles in various floors and rooms. Traps placed outdoor were distributed as shown in Fig 2.
Grain Cleaning Facility
Railroad yard Houses
Outdoor traps 49 46 124
Indoor traps 35 N/A 260*
Period (days) 76 82 36
Sampling occasions 5 5 2-3
Sampling interval (days)
15 16 15
Fig.1. Picture showing the grain cleaning facility (3.2 million bushels storage capacity) and railroad yard. The houses were located to the north and south of the facility.
0
10
20
30
40
50
60
70
80
Fre
quen
cy (%
)
0 0.1-5 5.1-10 10.1-20 20.1-30 >30
Mean no. adults/trap/30 days
Facility HousesRailroad
0
20
40
60
80
100
120
140
0 0.1 - 10.0 10.1 - 20.0 20.1 - 30.0 30.1 - 40.0 40.1 - 50.0 >50.1
Site No. traps
Mean no. adults/trap/30
days + SE
Houses (N) 100 3.89 + 0.44a
Facility 49 3.65 + 0.85ab
Houses (S) 23 2.35 + 0.57b
Railroad yard 46 0.38 + 0.08c
• Beetles were present inside and outside the facility and houses.
• Captures were not significantly different (P > 0.05) between the facility and houses.
• Very few beetles were captured in the railroad yard.
• Outdoor beetle captures did not vary within a house (F = 0.50; df = 3, 89; P = 0.686), but varied among houses (F = 3.29; df = 30,89; P = 0.0001; mean density range 0.26 – 7.89 adults/trap/30 days).
• Except for the attic, beetles were generally found in pitfall traps in every floor and room.
Floor No. traps
Mean no. adults/trap/30
days
Basement 8 0.25
Main 7 3.27
Bin 10 33.04
Distribution 5 11.60
Scale 5 5.53
Fig. 5. Beetle captures among cleaning facility floors
Fig. 6. Comparison of beetle captures among four locations
Scale: 1cm=67.37ft
Fig.2. Sticky traps (boxed in the top picture) were placed outdoors at the cleaning facility (top), houses (middle), and railroad yard (bottom). Pitfall traps (boxed in the middle picture) were placed inside of houses.
Direction No. traps Mean no. adults/trap/30
days + SE
NE 31 4.1 ± 0.8a
SW 31 3.9 ± 0.8a
NW 31 3.3 ± 0.7a
SE 30 3.2 ± 0.7a
0one data
point
Mean = 9.99SE = 1.77
Mean = 21.01SE = 9.56
Mean = 9.09SE = 1.91
Mean = 4.92SE = 1.57
Mean = 7.35SE = 1.77
Mean = 14.90SE = 3.57
0
5
10
15
20
25
Kitchen n = 68
Bath n = 25
Laundry n = 10
Living n = 68
Dining n = 10
Bedroom n = 53
Attic n = 1
Mea
n no
. adu
lts/tr
ap/3
0 da
ys
Mean = 12.15SE = 1.67
Mean = 3.48SE = 0.74
Mean = 16.43SE = 4.26
0one data
point0
2
4
6
8
10
12
14
16
18
Basement n = 38
Ground Floor n = 175
Second Floor n = 21
Attic n = 1
Mean
no
. ad
ult
s/t
rap
/30 d
ays
Fig. 7. Comparison of beetles captured in traps placed around houses
Fig. 9. Pitfall trap captures of beetles inside houses by floor (N = 235)
* pitfall traps
Fig. 3. Frequency distribution of beetles captured in outdoor traps
Fig. 4. Contour map of outdoor trap captures
N
Fig. 10. Pitfall trap captures of beetles inside houses by room (N = 235)
Fig. 8. Frequency distribution of captures in pitfall traps inside houses (N = 235 traps)
N
Background Information
Conclusions
Presented at the 9th International Working Conference on Stored-Product Protection, 15-18 October 2006, Campinas, Brazil
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